condition mean min max ZT0-3 2545.0 2545.0 2545.0 ZT4-7 1426.5 1426.5 1426.5 ZT8-11 1349.4 1349.4 1349.4 ZT12-15 1200.65 1200.65 1200.65 ZT16-19 1868.75 1868.75 1868.75 ZT20-23 2737.7 2737.7 2737.7